zfs discuss - Jan 2007 - use the same zfs filesystem with differnet mountpoint

I think of have solaris and mac os 10.5 on the same machine and mount same
filesystem on to differnet point on each os.
Is/will it possible or do I have to use sym. links?
 
 
This message posted from opensolaris.org

Fabian W?rner wrote:
> I think of have solaris and mac os 10.5 on the same machine and mount same
filesystem on to differnet point on each os.
> Is/will it possible or do I have to use sym. links?
You can NOT mount the same ZFS (or UFS of that matter) from more than 
one system at the same time, even if they are physically hosted on the 
same hardware they are still two different operating system instances.


-- 
Darren J Moffat

On Thu, Jan 11, 2007 at 11:52:19AM +0000, Darren J Moffat
wrote:
> Fabian W??rner wrote:
> >I think of have solaris and mac os 10.5 on the same machine and mount
same
> >filesystem on to differnet point on each os.
> >Is/will it possible or do I have to use sym. links?
> 
> You can NOT mount the same ZFS (or UFS of that matter) from more than 
> one system at the same time, even if they are physically hosted on the 
> same hardware they are still two different operating system instances.
Re-read: "on the same machine"

I think he''s dual booting and wants to share the ZFS vol between OSes.

I don''t know if he can change the "mountpoint" however
without jumping
through hoops.

-brian

>On Thu, Jan 11, 2007 at 11:52:19AM +0000, Darren J Moffat wrote:
>> Fabian W??rner wrote:
>> >I think of have solaris and mac os 10.5 on the same machine and
mount same
>> >filesystem on to differnet point on each os.
>> >Is/will it possible or do I have to use sym. links?
>> 
>> You can NOT mount the same ZFS (or UFS of that matter) from more than 
>> one system at the same time, even if they are physically hosted on the 
>> same hardware they are still two different operating system instances.
>
>Re-read: "on the same machine"
>
>I think he''s dual booting and wants to share the ZFS vol between
OSes.
>
>I don''t know if he can change the "mountpoint" however
without jumping
>through hoops.

Are legacy mount points recorded in ZFS?  I though they just lived in
/etc/vfstab.  If so, then that could work.

Casper

On Thu, Jan 11, 2007 at 02:54:29PM +0100, Casper.Dik at sun.com
wrote:
> 
> >I don''t know if he can change the "mountpoint"
however without jumping
> >through hoops.
> 
> Are legacy mount points recorded in ZFS?  I though they just lived in
> /etc/vfstab.  If so, then that could work.
Oooh, I hadn''t thought about legacy.  I tend to try not to use those if
at
all possible, but that might just do the trick.

-brian

Fabian W?rner wrote:
> I think of have solaris and mac os 10.5 on the same machine and mount same
filesystem on to differnet point on each os.
> Is/will it possible or do I have to use sym. links?
>  
Since the mount point is stored in the ZFS pool, you''ll
need to use legacy mounts to do this.  This works fine
between different Solaris versions; if the MAC folks
didn''t change their on disk format it might just work
between OS-X and Solaris as well.

- Bart


-- 
Bart Smaalders			Solaris Kernel Performance
barts at cyber.eng.sun.com		http://blogs.sun.com/barts